ML17331A325

Responds to Util Re Thermo-Lag 330-1 Fire Barriers.In Accordance W/Reporting Requirements of GL 92-08, Licensee Should Confirm in Writing,Completion of Corrective Actions

ML17331A325
Person / Time
Site:	Cook
Issue date:	05/28/1993
From:	Bill Dean Office of Nuclear Reactor Regulation
To:	Fitzpatrick E AMERICAN ELECTRIC POWER SERVICE CORP., INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
References
GL-92-08, GL-92-8, TAC-M85538, TAC-M85539, NUDOCS 9306070293
Download: ML17331A325 (4)

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555.0001 Hay 28, 1993 Docket Nos.

50-315 and 50-316 Hr.

E.

E. Fitzpatrick, Vice President Indiana Michigan Power Company c/o American Electric Power Service Corporation 1 Riverside Plaza

Columbus, Ohio 43216

SUBJECT:

DONALD C.

COOK NUCLEAR PLANT, UNITS 1

AND 2

RESPONSE

TO GENERIC LETTER 92-08, "THERHO-LAG 330-1 FIRE BARRIERS,"

(TAC NOS.

H85538 AND H85539)

By letter dated April 16,

1993, you provided a response to Generic Letter (GL) 92-08 for Donald C.

Cook Nuclear Plant, Units 1 and 2 (D. C. Cook).

Your response stated that the Thermo-Lag 330-1 fire barrier systems installed at D.

C.

Cook were selected based upon guidance provided by the NRC during workshops conducted in 1984 and qualification test reports and other literature received from Thermal Science Incorporated (TSI).

However, given the questions that have recently arisen concerning the performance of the material and the conduct of previous tests, you could not confirm that the fire barrier systems have been qualified by representative fire endurance tests.

You stated that the fire barrier configurations installed in D.

C.

Cook represent, in general, the materials, workmanship, methods of assembly, dimensions, and configurations described in the TSI technical notes and test reports.

You also stated that deviations from the TSI installation procedures were evaluated and documented.

You reported that ampacity derating factors were considered as part of the design change that installed Thermo-Lag 330-1 material on cable raceways and that calculations using a computer model confirmed that the original cable raceway design included sufficient margin to accommodate the temperature rise resulting from wrapping raceways with Thermo-Lag.

You further stated that appropriate actions to resolve fire barrier concerns are being developed through an industry program coordinated by NUHARC and you would apply the results of the industry program, when completed.

Your response stated that you would provide us a schedule by which any necessary corrective actions would be completed 120 days after the NUHARC program is concluded and that compensatory measures have been taken in accordance with plant technical specifications, as previously described.

In your response to GL 92-08 you indicated that the actions necessary to restore (or to confirm) the operability of these barriers will be based on the results of the NUHARC program.

The staff expects that licensees referencing the NUHARC program will review the results and, within 30 days after the ripAA3-~--

9306070293 930528 PDR ADOCK 05000315 PDR P

Mr. E.

E. Fitzpatrick May 28, 1993 completion of the program, inform the NRC of the actions necessary and the schedule for restoring the operability of these fire barriers.

This includes those plant specific or unique fire barrier configurations that are not bound by the NUMARC program.

In accordance with the reporting requirements of GL 92-08, you are also to confirm in writing, completion of the corrective actions.

The information requested by this letter is within the scope of the overall burden estimated in Generic Letter 92-08, which was-an average of 300 person-hours for each addressee's response.

This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expires June 30, 1994.

Sincerely,

44. ~

for William M. Dean, Sr. Project Manager Project Directorate III-1 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation cc:

See next page

Hr.

E.

E. Fitzpatrick completion of the program, inform the NRC of the actions necessary and the schedule for restoring the operability of these fire barriers.

This includes those plant specific or unique fire barrier configurations that are not bound by the NUHARC program.

In accordance with the reporting requir'ements of GL 92-08, you are also to confirm in writing, completion of the corrective actions.

The information requested by this letter is within the scope of the overall burden estimated in Generic Letter 92-08, which was an average of 300 person-hours for each addressee's response.

This request is covered by Office of Hanagement and Budget Clearance Number 3150-0011, which expires June 30, 1994.

Sincerely, cc:

See next page DISTRIBUTION:

~ocket ~1 PD3-1 Reading File L'. Harsh W. Dean E. Jordan HNBB-3701 A. Hasciantonio 12/B/4 P. Gill 7/E/4 William H. Dean, Sr. Project Hanager Project Directorate III-1 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation NRC 8 Local PDRs J. Zwolinski H. Shuttleworth OGC ACRS (10)

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• SEE PREVIOUS CONCURRENCE OFFICE NAHE DATE COPY OFF!CE DATE COPY LA:PDIII-1*

HShuttlewort 5/24 93 YES/NO PHAS: ILPD*

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13 93 Yes No PH: PDI II-1 WDean:jkd 5 Z893 YES NO BC:SPLB*

CHcCracken 5/17/93 YES/HO BC:EELB*

CBerlin e t 5 21 93 YES NO PD: PD III-1 LHarsh 5

893 YES NO

Mr. E.

E. Fitzpatrick Indiana Michigan Power Company CC:

Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Attorney General Department of Attorney General 525 West Ottawa Street

Lansing, Michigan 48913 Township Supervisor Lake Township Hall Post Office Box 818

Bridgman, Michigan 49106 Al Blind, Plant Manager Donald C.

Cook Nuclear Plant Post Office Box 458

Bridgman, Michigan 49106 U.S. Nuclear Regulatory Commission Resident= Inspector Office 7700 Red Arrow Highway Stevensville, Michigan 49127 Gerald Charnoff, Esquire

Shaw, Pittman, Potts and Trowbridge 2300 N Street, N.

W.

Washington, DC 20037 Mayor, City of Bridgman Post Office Box 366 Bridgman, Michigan 49106 Special Assistant to the Governor Room 1 - State Capitol

Lansing, Michigan 48909 Nuclea} Facilities and Environmental Monitoring Section Office Division of Radiological Health Department of Public Health 3423 N.

Logan Street P. 0.

Box 30195

Lansing, Michigan 48909 Donald C.

Cook Nuclear Plant Mr. S.

Brewer American Electric Power Service Corporation 1 Riverside Plaza

Columbus, Ohio 43216